I read Silversberg as a child. I found him enjoyable. In many ways his books were very much like longer versions of the fiction I read in Omni magazine. Some Americans call him a 3rd rate hack,but I was on Amazon looking for a copy for my own kids. I robot is better, 2001 is better of course. But this is fantasy to escape (in our case months of winter). RS still gave me hours of escape and kept me reading as a boy. If I had not practiced on his books, I would never have been able to read Dune. If Kilgore Trout were a real author, I think he would write with similar quality.